# Performance-Analyser

> Get insight into the performance of the website in the current tab - sort of a mini live version of WebPageTest.

Canonical page: [https://chrome-stats.com/d/performance-analyser](https://chrome-stats.com/d/performance-analyser)

## Overview

- **ID:** `performance-analyser`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Michael Mrowetz
- **Category:** web-development
- **Daily users:** 217
- **Weekly downloads:** 2
- **Rating:** 2.67 / 5 (3 ratings)
- **Version:** 1.7.1
- **Last updated:** 2020-12-07
- **First published:** 2015-02-01
- **Size:** 34 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/performance-analyser/)

## Description

Performance-Analyser is a Chrome extension that provides instant insights into the performance of the website loaded in your current browser tab. Utilizing the Resource, Navigation, and User Timing APIs, the tool displays detailed metrics such as request types, domains, load times, and user timing marks — essentially delivering a mini live version of WebPageTest directly in your browser.

This extension is derived from the Firefox add-on version of Performance-Bookmarklet, providing a seamless and real-time analysis experience to developers and web professionals. The source code is openly available on GitHub, reflecting its commitment to transparency and open-source development. With Performance-Analyser, monitoring web performance has never been easier or faster.

## Rankings

- #7,889 — Overall
- #1 — performance
- #20 — analysis
- #55 — format
- #59 — analyze
- #137 — analyzer

## Permissions and access

### Permissions

- `activeTab`

## Safety

- **Risk impact:** Very low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/performance-analyser)